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    CVE-2026-19295

    IBM Langflow OSS 1.0.0 through 1.11.1 allows an authenticated attacker to execute arbitrary operating system commands in the server process by saving a flow with a crafted type field value and triggering a build of a wrapper flow that references it. This allowed privilege escalation from "authenticated flow user" to arbitrary OS-level command execution under the server process identity, bypassing the LANGFLOW_ALLOW_CUSTOM_COMPONENTS=false policy control.

    Published:Aug 28, 2026
    Last Modified:Aug 31, 2026
    EPS:Aug 28, 2026
    EPSS Score:0.00976
    CVSS Score:9.9

    Affected Products

    Vendor
    Ibm
    Product
    Langflow Oss
    Vendor
    Langflow
    Product
    Langflow

    Exploits

    https://github.com/rmhowe425/POC-CVE-2026-19295

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-35 Leverage Executable Code in Non-Executable Files

    Related CVEs

    CVE-2026-76059 (CVSS 8.8) — IBM Langflow OSS 1.0.0 through 1.11.5 An attacker who could submit custom component source code could bypass t…
    CVE-2026-78569 (CVSS 8.8) — IBM Langflow OSS 1.0.0 through 1.11.5 could allow an authenticated attacker to execute arbitrary code due to a…
    CVE-2026-78571 (CVSS 8.8) — IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute arbitrary code du…
    CVE-2026-78575 (CVSS 8.8) — IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute arbitrary command…
    CVE-2026-79723 (CVSS 5) — IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to obtain sensitive informat…
    CVE-2026-79724 (CVSS 9.8) — IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote attacker to execute arbitrary OS commands due to im…
    CVE-2026-79725 (CVSS 6.5) — IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to read arbitrary files due …
    CVE-2026-79742 (CVSS 8.8) — IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute arbitrary code du…
    CVE-2026-81204 (CVSS 9.8) — IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote attacker to execute arbitrary code due to code inje…
    CVE-2026-81211 (CVSS 8.8) — IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute arbitrary Python …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High